US Bridges

S15-E/W8 Connector over I-15 & I-8

Fair

San Diego County, California · 11-SD-015-R6.06-SD · Structure no. 57 0884F

Built
1984
41 years old
Condition
Fair
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
3,114 ft
16 main spans
Daily traffic
48,000
2020 count
Owner
State
State Highway Agency

About this bridge

S15-E/W8 Connector over I-15 & I-8 is a prestressed concrete continuous box beam or girders - multiple carrying S15-E/W8 Connector over I-15 & I-8 in San Diego County, California. It was built in 1984, so it is 41 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 48,000 vehicles a day, roughly 1% of them trucks, projected to reach 55,210 by 2041. The structure is 3,114 ft (949 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesS15-E/W8 Connector
CrossesI-15 & I-8
Location11-SD-015-R6.06-SD
RouteState Highway 15
CountySan Diego County
StateCalifornia
Coordinates32.78307, -117.11427
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans16 (+5 approach)
Design loadHS 20 + Mod
Structure length3,114 ft (949 m)
Longest span207 ft (63.1 m)
Deck width38 ft (11.7 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic48,000 (2020)
Projected traffic55,210 by 2041
Trucks1%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S15-E/W8 Connector over I-15 & I-8 built?

It was built in 1984, making it 41 years old in 2025.

What condition is S15-E/W8 Connector over I-15 & I-8 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2023.

How much traffic does S15-E/W8 Connector over I-15 & I-8 carry?

About 48,000 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is S15-E/W8 Connector over I-15 & I-8?

The structure is 3,114 ft (949 m) long with a longest span of 207 ft (63.1 m) and a deck 38 ft wide.

Who owns S15-E/W8 Connector over I-15 & I-8?

It is owned by the State Highway Agency.